The waves from a radio station can reach a home receiver with two different paths. One is a straight-line path from the transmitter to the home, a distance of 28.0 km. The second path is with reflection from a storm cloud. Suppose that this reflection takes place at a point midway among transmitter and receiver. If the wavelength broadcast with the radio station is375 m, discover the minimum height of the storm cloud that will produce destructive interference among the direct and reflected beams. (Assume no phase changes on reflection.)